a state of deterioration due to old age or long use
同义词：dilapidation
decrepitude详细解释
de.crep.i.tude n.（名词）The quality or condition of being weakened, worn out, impaired, or broken down by old age, illness, or hard use.老弱；残破：由于年老、疾病或过度使用而使物质的品质或状况衰弱、陈旧、受损或倾塌
